package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

//菜品管理
@RestController
@Slf4j
@RequestMapping("/dish")
public class DishController {
    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private CategoryService categoryService;

    @Autowired
    private RedisTemplate redisTemplate;

    //新增菜品
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.saveWithFlavor(dishDto);

        //清理所有菜品的缓存数据
//        Set keys=redisTemplate.keys("dish_*");
//        redisTemplate.delete(keys);

        //清理某个分类下的菜品缓存
        String key="dish_"+dishDto.getCategoryId()+"_1";
        redisTemplate.delete(key);

        return R.success("新增菜品成功");

    }

    @GetMapping("/page")
    public R<Page> page (int page,int pageSize,String name){

        //构造分页构造器对象
        Page<Dish> pageInfo=new Page<>(page,pageSize);
        Page<DishDto> dishDtoPage=new Page<>();

        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper=new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(name!=null,Dish::getName,name);

        //执行分页查询
        dishService.page(pageInfo,queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");

        List<Dish> records=pageInfo.getRecords();
        List<DishDto> list=records.stream().map((item)->{
            DishDto dishDto=new DishDto();

            BeanUtils.copyProperties(item,dishDto);


            Long categoryId=item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category=categoryService.getById(categoryId);

            if(category!=null){
                String categoryName=category.getName();
                dishDto.setCategoryName(categoryName);
            }

            return dishDto;
        }).collect(Collectors.toList());


        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    //根据id查询菜品信息和对应的口味信息,修改前回显
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id){

        DishDto dishDto=dishService.getByIdWithFlavor(id);

        return R.success(dishDto);
    }


    //修改菜品
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);

        //清理所有菜品的缓存数据
//        Set keys=redisTemplate.keys("dish_*");
//        redisTemplate.delete(keys);

        //清理某个分类下的菜品缓存
        String key="dish_"+dishDto.getCategoryId()+"_1";
        redisTemplate.delete(key);

        return R.success("修改菜品成功");

    }

    //删除和批量删除   我自己敲的
    @DeleteMapping
    public R<String> delete(String ids){
        String[] str=(ids.split(","));
        Long[] str2=new Long[str.length];
        for(int i=0;i<str.length;i++){
            str2[i]=Long.valueOf(str[i]);
        }

        dishService.removeByIds(Arrays.asList(str2));
        dishFlavorService.removeByIds(Arrays.asList(str2));

        //清理所有菜品的缓存数据
        Set keys=redisTemplate.keys("dish_*");
        redisTemplate.delete(keys);


        return R.success("菜品删除成功");
    }

    //修改状态
    @PostMapping("/status/{st}")
    public R<String> status(@PathVariable int st,String ids){

        String[] str=(ids.split(","));
        Long[] str2=new Long[str.length];
//        for(int i=0;i<str.length;i++){
//            str2[i]=Long.valueOf(str[i]);
//        }

//        for(int i=0;i<str.length;i++){
//            Dish dish=dishService.getById(str2[i]);
//            dish.setStatus(st);
//            dishService.updateById(dish);
//        }

//        for (String s:str)
//        {
//            Dish dish = dishService.getById(Long.valueOf(s));
//        }

        Arrays.stream(str).forEach((s)-> {
           Dish dish = dishService.getById(Long.valueOf(s));
           dish.setStatus(st);
           dishService.updateById(dish);
        });

        //List list=new ArrayList();




        return R.success("状态修改成功");


    }

//    @GetMapping("/list")
//    public R<List<Dish>> list(Dish dish){
//
//        //构造查询条件
//        LambdaQueryWrapper<Dish> queryWrapper=new LambdaQueryWrapper<>();
//        queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
//        //添加条件，查询状态为1（起售状态）的菜品
//        queryWrapper.eq(Dish::getStatus,1);
//
//        //添加排序条件
//        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
//
//        List<Dish> list=dishService.list(queryWrapper);
//
//        return R.success(list);
//    }

    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
        List<DishDto> dishDtoList=null;
        String key="dish_"+dish.getCategoryId()+"_"+dish.getStatus();
        //先从redis获取缓存数据
        dishDtoList=(List<DishDto>) redisTemplate.opsForValue().get(key);

        if(dishDtoList!=null){
            //如果存在，直接返回，无需查询数据库
            return R.success(dishDtoList);
        }


        //如果不存在，查询数据库，将查询到的菜品数据缓存到redis

        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId()!=null,Dish::getCategoryId,dish.getCategoryId());
        //添加条件，查询状态为1（起售状态）的菜品
        queryWrapper.eq(Dish::getStatus,1);

        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list=dishService.list(queryWrapper);

        dishDtoList=list.stream().map((item)->{
            DishDto dishDto=new DishDto();

            BeanUtils.copyProperties(item,dishDto);


            Long categoryId=item.getCategoryId();//分类id
            //根据id查询分类对象
            Category category=categoryService.getById(categoryId);

            if(category!=null){
                String categoryName=category.getName();
                dishDto.setCategoryName(categoryName);
            }

            //当前菜品id
            Long dishId=item.getId();
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper=new LambdaQueryWrapper<>();
            lambdaQueryWrapper.eq(DishFlavor::getDishId,dishId);
            //select * from dish_flavor where dish_id=?
            List<DishFlavor> dishFlavorList=dishFlavorService.list(lambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);


            return dishDto;
        }).collect(Collectors.toList());

        //如果不存在，查询数据库，将查询到的菜品数据缓存到redis
        redisTemplate.opsForValue().set(key,dishDtoList,60, TimeUnit.MINUTES);

        return R.success(dishDtoList);
    }
}
